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freeCodeCamp/curriculum/challenges/english/08-data-analysis-with-python/data-analysis-with-python-course/pandas-creating-columns.md
miyaliu666 3ea2fe4f77 feat(i18n,curriculum): add Bilibili ids for Chinese (#43564) 
Co-authored-by: Kristofer Koishigawa <scissorsneedfoodtoo@gmail.com>
Co-authored-by: Oliver Eyton-Williams <ojeytonwilliams@gmail.com>
2021-10-01 09:54:12 +05:30

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id, title, challengeType, videoId, bilibiliIds, dashedName
id title challengeType videoId bilibiliIds dashedName
5e9a093a74c4063ca6f7c15c Pandas Creating Columns 11 _sSo2XZoB3E
aid bvid cid
975568901 BV1b44y1b7Cg 409018052
pandas-creating-columns

--description--

Instead of using notebooks.ai like it shows in the video, you can use Google Colab instead.

More resources:

--question--

--text--

What code would add a "Certificates per month" column to the certificates_earned DataFrame like the one below?

      Certificates  Time (in months)  Certificates per month
Tom               8                16                    0.50
Kris              2                 5                    0.40
Ahmad             5                 9                    0.56
Beau              6                12                    0.50

--answers--

certificates_earned['Certificates'] /
certificates_earned['Time (in months)']

certificates_earned['Certificates per month'] = round(
    certificates_earned['Certificates'] /
    certificates_earned['Time (in months)']
)

certificates_earned['Certificates per month'] = round(
    certificates_earned['Certificates'] /
    certificates_earned['Time (in months)'], 2
)

--video-solution--

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